Inventor · disambiguated record
Derek A. Parkin
Also filed as: PARKIN DEREK · PARKIN DEREK A
5 granted patents·4 pending applications·30 citations·filing 2002–2021
76Inventor score
Top patents by PatentIndex Score
9 records- 0192US10137320B2Respirator flow control apparatus and method3M INNOVATIVE PROPERTIES CO·Filed 2014·Granted Nov 27, 2018·11 cites·23 claims
- 0285US11130008B2Respirator flow control apparatus and method3M INNOVATIVE PROPERTIES CO·Filed 2018·Granted Sep 28, 2021·3 cites·26 claims
- 0379US12329994B2Respirator flow control apparatus and method3M INNOVATIVE PROPERTIES COMPANY·Filed 2021·Granted Jun 17, 2025·0 cites·11 claims
- 0460USD575390SExhalation valve filter3M INNOVATIVE PROPERTIES CO·Filed 2005·Granted Aug 19, 2008·16 cites·1 claims
- 0559US2010108067A1Respirator flow control apparatus and methodWALKER GARRY J·Filed 2008·Application pending·0 cites
- 0654US2013228183A1Supplied air respirator that has an adjustable length hose3M INNOVATIVE PROPERTIES CO·Filed 2013·Application pending·0 cites
- 0750US2006231100A1Supplied air respirator that has an adjustable length hoseWALKER GARRY J·Filed 2005·Application pending·0 cites
- 0843US2003075829A1Product application deviceFiled 2002·Application pending·0 cites
- 0921USD550837SFrame that supports an exhalation valve filter3M INNOVATIVE PROPERTIES CO·Filed 2005·Granted Sep 11, 2007·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →